Electric motor.



R. SIEGFRIED, 3135mm lhOTOF APPLICATION FILED MAY 22, 1905.

Patented Apr. 13, 1909.

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INVENTOR WITNESSES: 6%?02 R. SIEGFRIED. ELECTRIC MOTOR.

APPLICATION FILED MAY 22. 1905.

fl is fassess sinsrlaisn, or BITTSBURG, PENNSYLVANIA; ASSIGNOR TO WESTINGHOUSE ELEC- TRIO.tz lifANUFhOTURINGCOMPANY, A CORPORATION or PENNSYLVANIA.

his. w s.

sen of "United States, i and a resident I b is} a specification; lvl invention relates to electric motors and as for its object to provide a motor 01 the "it type with means whereby the brushes may be so located as to be men; accessible, whether the motor be suspended from above, supported i'roni below or attached to a side wall, in case the number of brushes employed is less than the number of the field magnet pole piecesand with means wherebythe commutator may be either obvered or exposed, in operation.

In the acconi anying draivings, Figure 1- is a view, partial y in end clei tion and partially in section of a motor embodying my" invention and Fig. 2 is a side elevation of the motor shown in Fig. l, a portion of the commutator inclosing band being; broken away.

The present extensive use of electric motors in industrial operations necessitates their adaptation to widely J varying conditions, both as regards the work to be performed and the locations to be occupied, it bein sometin ies necessary or advisable'to mount-such motors upon supporting bases; whicn may be either-horizontal or vertical or at any angle between the? two, and since frequent i'pspectionsof the commutator brushes may be desirable inordcr to' make repairs or renewals, such location 01' the brushes as will. facilitate access-thcretois'oi considerable importance.

My present invention provides a convenient and inexpensive means whereby the commutator brushes'may be so located as to be readily accessible and such inc-ans will be i new described. 4 The field magnet frame 1 of the motor 2, is" provided with feet 3, by means 01' which it may be attached to a proper supporting base either in the position indicatcdor in any, other position, in accordance with the condi' tions. of the service to which is applied. As here shown the frame is provided with four pole pieces 4-, two of which pro i ;;ct horizontally and two vertically inward when the IllQtOI' is in the position indicated in Fig. 1.

ra ecification of Letters Patent.

ot-Pittshurg, in the county ofi leghcny and rotate of Pennsylvania, have'invented a new Y an"; useful lhiprovement in Electric lvioto'rs',

of which the loliowin Patented April 13, r9091 These pole pieces are provided with magnet 12mg coils 5, as s usual in this class oi inachmes. v

any usual or desired ctmstruc-tion, th gjlatter being indicated as-tw'o in number.

T The field magnetframc 1 is n: adc in two,scc-' ribsflO; 1 1 and 12 and the lower frame sec-l tion i s-provided with three similar ribs, 13,. 14 and 15, all of whichare parallel'to and slightly longer than the commutator cylinder andterminate at their obter ends in a two part. end ring or plate 16. the frame are provided with end lugs 17 that are provided with bolts 18 by means of which Y the parts are clamped together.

Each of the ribs 1 1 and 14 is provided with screw threaded holes '19 and .with a plane surface '20 against which a brush holder 8 play be clamped by means of bolts 21 the nmer ends of which engage theholes 19. Each of the ribs 12 and 15 is also. rovided with screw threaded. holes 22'an plane surface 23, the surfaces 23 of these ribs being parallel to each other, and at right angles to the surfaces 20, with which the bars 11 and 14'are provided and against which brush holders 8 inay be clamped by means of with a The armature 6, the commutator cylinder .7 and the brushes and holders 8, may be of The two parts of i bolts 21 which engage the screw threaded holes 22. V

A sheet metal casing 24 for the commutator is made in two sections that may be proviocd with linings of felt or other yielding material and maybe fastened together by means. of hinged 'clampingbolts 25,"ears o1 lugs 6 and thumb nuts 27 The se'ctions are nc' t fastened to the frame and hence the locking-devices may be so located as to be.

readilyaccessible, irrespective of-the posi tion in which the motor is placed, and the S1 .GL lp1,"lS- l 7]3,y also be readily. i'emove d when desired. 1

When the motor is in the position indi cated; in the drawingpthe brush holders are mounted upon the ribs -11 and 12,- asindicated, and when so located, ready access may be had to them but if the motor is lacedin any locality or position which wil prevent are not essential to the invention and I,

therefore, desire to include in its scope such variations from what I show as do not change the, mode of operation or result.

.1 claim as my invention:

1. In an electric motor, the combination with a iield magnet frame that is open circuinl'erentially at the commutator end and is provided with brusl'i-supporting ribs, of a two-part rdindrical commutator cover, and means for clamping the cover parts together with their adjacent edges in any desired an-.

gular position with reference to the base of the motor. 1 I

2. In an electric motor, the combination with a iield magnet frame that is open circumferentially at the comn'iutator end and is provided with brush-supporting ribs, of two segmental cover plates for said open part and means for removably clamping said cover-plates together with the division lines in a plane making any desired angle with the l base of the motor.

i 3. In an electric motor, the combination with a field magnet l a closed casing for the armature but isopen around the periphery of the commutator cylinder, of two segmental sheet metal coverplates for the open portion of the frame and bolts and nuts for clamping said parts towith their division-lines in a plane gether desired angle with the base of making any the motor.

4. In an electric motor, the combination with a field magnet frame having brush-supporting ribs projecting from its commutator end, of a circumierentially adjustable commutator cover comprising a plurality of segments, and means for clamping said segments together in any position to which the cover may be adjusted.

In testimony whereof, I have hereunto subscribed my name this 20th day of May,

Bonner SIEGFRIED.

Witnesses f frame that constitutes.- 

